In 1808, Conewango became the second township in Warren County, Pennsylvania.

The name and original boundaries of Conewango township were established by a commission (appointed by the Venango County Court in 1806), whose report and recommendations were adopted and confirmed by the same authority in 1808. The township of Conewango then embraced the eastern half of the county, and the first township election was held at the house of Daniel Jackson, in the town of Warren, which then consisted of five houses, in the spring of 1808.
​
The first settler within its present limits, probably, was Daniel Jackson,
who with his family began a residence on Jackson's Run, just north of Warren,
in 1797.
​
In 1821, by an order of court confirmed March 8 of that year, the two
townships of Brokenstraw and Conewango, which to this time from 1808 had
embraced the whole county, were divided into twelve townships. By this division the area of Conewango was reduced to but a fraction of its former extent.